<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>选择打开页面</title>
    <link rel="stylesheet" href="plugin/bootstrap/css/bootstrap.css">
    <link rel="stylesheet" href="plugin/bootstrap/css/bootstrap-theme.css">

</head>
<body>

<div class="select_link">
    <a href="./bigscreen.html">
        <button type="button" class="btn btn-primary btn-lg btn-block">大屏幕</button>
    </a>

    <a href="./touchScreen.html">
        <button type="button" class="btn btn-default btn-lg btn-block">触摸控制屏幕</button>
    </a>
</div>

<style>
    div.select_link{
        position: absolute;
        top:50%;
        left:0;
        transform: translateY(-50%);
        right: 0;
        margin: 0 20%;
    }

    a{
        display: block;
        margin: 1em 0;
    }
</style>

</body>
</html>